Triple Band microstrip patch Antenna with Aperture Reflectorfor Wireless Applications

Abstract

Radiation of the electromagnetic energy through an end device connected via internet of things (IoT) iscrucial for any modern-day communication system. A novel triple band microstrip patch antenna scheme is introduced in this work for supporting IoT applications like smart distance communication. The current design consists of a substrate made of FR4.The radiating element is placed on the top layer of the substrate. The shape of the radiating element is a triple hook patch, and the bottom part consists of two symmetrical C shaped dipoles. The reflector is separated from the substrate by Teflon spacers. The reflector is a square planehaving a circular aperture cut at its centre. This enhanced the gain bandwidth performance of the antenna. The presented antenna operates in three bands at 1.56-2.5GHz, 2.6-2.71GHz and 3-3.2GHz with resonant frequencies of 1.74, 2.6 and 3.18GHz respectively. The return loss of the above bands is -21.2, -16 and -30.9dB respectively.